Suitcase



FIG. 1 is a front perspective view of a suitcase showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a rear side view thereof;

FIG. 4 is a front side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top side view thereof; and,

FIG. 8 is a bottom side view thereof.

The broken lines show portions of the suitcase which form no part of the claimed design. 

CLAIM The ornamental design for a suitcase, as shown and described. 